: Northstar Engines and System Technical Discussion



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  1. oil consumption cured
  2. How often do I clean the throttle body?
  3. 94 A/C Problem
  4. Flushing radiator 98 deville
  5. Help with codes for an 02 Deville....
  6. 95 Eldo Idle/Acceleration????
  7. I'm sure this has been asked
  8. 1997 stalling problem
  9. 10% Ethanol comes to Northeast U.S.
  10. So I've been using 5W30...
  11. My tranny is FUBAR!
  12. Northstart - Blown Head / Headgasket?
  13. HOW TO: Test/Change TPS (99 STS)
  14. Rebuilt Northstar, No Codes, Poor MPG
  15. 4T80E Torque Converter Removal
  16. 97 ETC Complete Exhaust
  17. help with new car
  18. Fuel mileage (Holy cow!!!)
  19. Radiator Sealant
  20. 2000-2004 crank sensors
  21. Transmission squeak?
  22. Missing 9 HP
  23. How good is K&N filters... really?
  24. Leaking anti-freeze poss waterpump area
  25. Timeserts
  26. L37 gear shifts at what speeds?
  27. Rough cold idle...
  28. help in determing this motor
  29. Is there any interest in 93-95 bored throttle bodies?
  30. Temp gauge issue (Question 2)
  31. Fuel gauge issue (Question 1)
  32. Coolant boiling out of overflow
  33. upgrades...K+N =BAD???
  34. Well im alive...
  35. 1999 deville North** lost mileage
  36. Actual N* engine swaps
  37. Coolant Leak
  38. Just bought my first Cadillac-Has green coolant
  39. Any increase MPG tips?
  40. why ios engine running hotter than before
  41. where is the thermostat located in 2003 deville
  42. how to change coolant in 2003 deville
  43. Head Gasket Going
  44. difference between 275 and 300hp N*?
  45. 96-98 Intake parts
  46. Why is the Northstar "better" than the Intech?
  47. Post 2000 N*?
  48. Motor Mount Question
  49. A/C Question 1994 STS
  50. real fast idle
  51. So I Put My Sled On The Dyno Today..
  52. N* Supercharger and Turbo Systems!?!
  53. 93 N* AC bypass belt?
  54. How come N* isn't used in more vehicles?
  55. Switched to Mobil-1 and oil consumption dropped
  56. 2000 deville dts (Engine runs rough when 1st started)
  57. 2 mufflers for cosmetics or performance?
  58. Northstar upgrades?
  59. How difficult is this?
  60. It won't fire!!!!
  61. Northstar stands alone?
  62. Engine on or off during On Board Diagnostics?
  63. timing pics, homemade locating pins, please look
  64. HELP! Need part number........
  65. AC Recharging Help
  66. About those electric superchargers...
  67. Possibly the best sounding N*?
  68. $660 tune up for 95 STS??!!
  69. Engine Temp. Sensor
  70. When do I replace the AC Compressor
  71. 94 SLS 4.6l, code P071
  72. 130mph??
  73. oil filter adapter
  74. 94 to 97 Northstar interchange question
  75. Bad batch of DELCO PLATINUM 41-950 SPARK PLUGS
  76. How long should plugs/wires last?
  77. Easy question - which is right and which is left?
  78. Tell me how to do a WOT.
  79. How did this guy do burnouts?
  80. 95 Eldorado occasional starting problem.
  81. Coolant change Air purging?
  82. two torque sequences?
  83. mystery oil leak
  84. Still Can't Get The Front Valve Cover Off!!!
  85. Ignition System Problems
  86. This sounds dumb but I'm gonna ask anyway - air intake question
  87. A/C recharge
  88. API grades
  89. Engine Difference between 97' & 99' STS?
  90. part# for speedy sleeve
  91. Post Head gasket job (need Veteran rebuilders advise)
  92. 94 concours acting up..
  93. Trans Question 01 DTS
  94. Engine Error Codes...Please Help
  95. 4.6 L NorthStar Engine Design Questions
  96. multi miss fire multi codes 1996 dev
  97. Have a big ?
  98. What does it all mean?
  99. Metal flakes in engine oil
  100. latest lower end seal job procedure
  101. OBDII Tuner software for Northstar.
  102. Poor gas mileage in aurora 4.0
  103. Northstar Head Gasket, which side, which jug is more common
  104. Code P1415 help?
  105. need new O2s
  106. 2002 Deville transmission
  107. Wanted:1999 4.6 NorthStar leak-down values
  108. MAP Sensor relocation
  109. Can someone explain HOW my injectors went bad?
  110. Bad Mileage Not Fpr
  111. 1999 Cadillac STS Exhaust Mufflers
  112. 4t80e production changes 95-9
  113. Manifolds are melting my car
  114. Check Atf
  115. Putting Northstar on an Engine Stand
  116. Headgasket job +++?
  117. northstar swap into another car, a few questions
  118. 2002 Seville STS Cataylst Issues
  119. Engine Temperatures
  120. Can a 1999 4.6L Northstar "Y" be replaced/exchanged with a "9" of the same year
  121. Amsoil nano-filters (air & oil)
  122. DELCO PLATINUM #41-950 SPARK PLUGS from eBay
  123. 93 Water Pump Confusion
  124. How to check for bad ignition coil?
  125. 94 Eldorado surge in engine and 4 codes
  126. Questions On Crank Shafts
  127. weird start problem that occured
  128. northstar head switching
  129. Northstar 4.6 Interchange and Swapping
  130. Car Farts After WOT
  131. 1999 Northstar engine 85K Miles, How can one tell if is good
  132. 03 Seville Steering Adjustments? ? ?
  133. On My 3 Rear Main Seal
  134. 96 sts crankshaft position sensors
  135. any tranny experts out there?
  136. Fpr For $141.08
  137. Water pump
  138. Rwd N*
  139. Coolant Drain
  140. Coolant Leak 98 Deville
  141. so any chance of an AFC
  142. AC Compressor bypass
  143. 3.5L Shortstar Ignition
  144. Sound
  145. Northstar reliability...
  146. Name That Part
  147. Post headgasket job, one loose end left.
  148. Need re-assembly advise!
  149. Minor starting problem
  150. does it work? (hyper lube)
  151. 96 cadillac deville code after code?!?
  152. Transmission Durability?
  153. Shaky Tachometer at High RPM
  154. 1996 Seville STS Crank Sensors
  155. What other cars use the same style injectors?
  156. Adding Freon
  157. Lost power steering fluid rapidly. Is there a hose?
  158. Northstar engine rebuilders or performance builders in SoCal?
  159. 95 Northstar Coolant leak
  160. EXP ID Codes
  161. Looking for N*mech in northern RI
  162. 93 Eldorado T.C ignition issues
  163. voltage drops when car in drive
  164. after a&b solenoid
  165. Experts please help
  166. 1994 Cadillac Sevile STS thumping into fourth/overdrive
  167. know it all mechanic
  168. Well fellas, I think its really time....
  169. Northstar Head Gasket Issue
  170. timesert kit - for sale on ebay
  171. Strange rattling
  172. Northstar performance parts
  173. Procedure for Coolant flush
  174. Dynomax - Long life?
  175. Running Functional Test on my 94 Deville Concours.
  176. 94 northstar swap
  177. Airbox Computer?
  178. ICM Replacement
  179. Cranks, but won't start
  180. 96 deville antifreeze coming out exhaust
  181. Its Getting Hot Inside
  182. STS fuel Injection problem NEED HELP
  183. I think I'm missing a few ponies!
  184. 99 Deville Hesitating???
  185. Eliminating the exhaust crossover??
  186. Po138???
  187. Front Valve Cover Removal
  188. You guys read this stuff????
  189. camshaft swap "9" motor to "Y" motor
  190. What is TSB 99-06-04-053?
  191. 94 cadillac concours
  192. Can anyone tell me what these compression numbers mean?
  193. H Gasket Job Ballpark Price Needed for Parts
  194. Heater core replacement, help!
  195. Ah, darn... My 94 Eldorado Is having problems.
  196. Anyone know a reputable transmission shop in Orlando?
  197. Lifter?valve noise
  198. 93 Northstar dies out at idle
  199. Time Sert Kit Needed
  200. Engine Replacement
  201. Broken Head Bolt (small type)
  202. P0741 - TCC System Stuck Off...Now What??
  203. homemade locating dowels - a possibility?
  204. Rear Valve Cover Leak!!
  205. Going from a 4.0 to a 4.6
  206. how many miles on your N*?
  207. Crank Position Sensor Replace Quick Question...
  208. 98 STS code P0404 (and P0300)
  209. Not Nearly As Hard As I Thought
  210. what to do about SO codes...
  211. overfilled tranny....
  212. OBD1 chip reprogramming?
  213. Hey Check Out What Im Doing....
  214. 95-6 transmission harness
  215. new headbolts
  216. Torque Converter Clutch Stuck...How to Fix??
  217. BS? "aftermarket Mass Air Sensor = improved hp, torque and mileage from your car"
  218. pulling engine, top or bottom???
  219. RANGER: Can't Identify Codes...
  220. 1996 1/8th mile times!
  221. '96 SDV Update...2 Codes...Help??
  222. Need a new alternator......
  223. Cranking but not starting.. fuel pump relay?
  224. EXP ID 83, 84, 140, 25 ??? Any Help?
  225. timesert kit for sale
  226. Factory Specs for Compression??
  227. torque wrench advice
  228. Stripped Oil Pan Bolt Hole
  229. Would you like some cheese and crackers with that Whine?
  230. Ready to rebuild-best source for tserts and bearings
  231. Stability Reduced? wut?
  232. Compression numbers for the North*
  233. Options to repair ONE engine block thread
  234. What ever happened to the supercarger for N*?
  235. Torquing of Rocker????
  236. Minor Problem with my 94 SLS
  237. Chip & Bored T/B ???
  238. Why with the Northstar 4.6?
  239. PCM reflash for 95
  240. Sooooo....
  241. cam torque
  242. Blwoin a little smoke..
  243. casting number ID
  244. DANG - Trouble Codes Question
  245. Need some help..abs troubles?
  246. I saw a smoking Deville
  247. PCM Question II
  248. Air intake and airflow
  249. Trans making noise in park and neutral
  250. water pump replacement